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Takayama; Kazuyoshi
Sendai, JP
No. of patents:

Patent Number Title Of Patent Date Issued
8256530 Method of processing rock with laser and apparatus for the same September 4, 2012
An object is to provide a method capable of boring a borehole even when quartz glass or silicon dioxide is deposited as molten dross by laser irradiation. A laser irradiation position of a workpiece is irradiated with a laser having wavelength of 1.2 .mu.m or longer and a high factor
7901374 Fluid injection device March 8, 2011
A fluid injection device includes: a pulse generation section that includes a fluid chamber whose volume is changeable, and an inlet flow passage and an outlet flow passage that are connected to the fluid chamber; a first connection flow passage connected to the outlet flow passage,
7802384 Method and device for excavating submerged stratum September 28, 2010
An excavation technique for a stratum capable of excavating a submerged stratum such as a layer containing an underground resource by using laser irradiation in liquid is provided. In this technique, a laser beam transmitted through laser transmission means 20 is irradiated in liquid
7740626 Laser induced liquid jet generating apparatus June 22, 2010
The laser induced liquid jet generating apparatus irradiates a laser beam on a liquid in a main body, guides the generated liquid jet into a catheter via a nozzle, and generates a flow in the direction opposite the liquid jet. Even by the use of a catheter having a small outside diam

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